Transfer picture and process for its manufacture



Oct. 11, 1932. HENTSCHEL 1,882,593

TRANSFER PICTURE AND PROCESS FOR ITS MANUFACTURE Fi1od 0ct.2, 1929 Patented Oct. 11, 1932 PATENT OFFICE ERICK HENTSCHEL, OF LEIP ZIG, GERMANY 'raansraa rrc'roan m: raooass r03 I'rs MANUFACTURE Application filed October 2, 1929, Serial No.

The object of the invention is to provide transfer pictures, which are particularly suitable for transferring trade marks and other symbols to textile goods of all kinds, e. g.

5 stlgckings, and also to leather, rubber and the li e.

Transfer pictures for this purpose have already been used in which the picture is printed by means of varnish on to so-called reversing paper and provided with a coating made adhesive by heat. These transfer pictures have to be moistened when used, because the reversing paper will only come away from the picture printed on it when in a moist condition. After moistening the pictures are transferred to the articles to which they are to be applied b pressure witha hot flat iron. Their disa vantage is that the watersoluble film of the reversing 2o paper produces spots on the goods to which the transfer pictures are applied. The moistening of the pictures is also too troublesome.

Finally, prlnts are also known, which can be ironed off by dry heat on to fabrics or leather. In these paint or bronze floats in a resinous composition which acts as a bindin material which can be used for printlng, and which melts when the transfer is ironed on and thereby transac fers the bronze or paint to the goods to be stamped. The pulls or impressions produced with prints of this kind do not however possess the desired sharpness of outline in appearance and the bronze has no gloss on the fabrics because it soaks into it too much.

Transfer sheets are also known in which an infusible film of paint or bronze is so combined with a layer of paper that between the paper and the film of paint a film of wax and over the 'film of paint a coating rendered adhesive bv heat is applied. In transfer sheets of this kind the film of paint can be dissolved by dry heat from off the layer of paper and attached to an article. In order however to produce pictures with accurate outlines by means of such transfer sheets,- these latter must be used with heated embossing stamps. The disadvantage of this when embossing on fabrics is that the sharp embossing stamp easily cuts through delicate 886,884, and in Germany October 18, 1928.

fabrics. Furthermore, there is a great deal of waste in the case of these transfer sheets as only the picture is stamped out of the whole surface of the sheet and this makes the use of such transfer sheets expensive.

Transfer pictures are also known which are detached merel by dry heat from the paper backin or oundation and stuck to the article to e ornamented. In these transfer pictures the surface of the paper is first rendered impermeable and then provided with a coating or layer of wax onto which the picture is printed by flat printing, that is to say by litho aphic or offset printing, and a coating capa 1e of being made adhesive by heat is finally applied. As this fiat printing is based upon the fact that those places ofthe printing form which take on the ink and then print it off again onto the paper are rendered sensitive to grease, the printing ink must be greasy. This grease in the printing-ink is obtained in the usual way by mixing varnish with the ink. For the production of the dry transfer pictures here in ques tion the grease contained in the printing ink has the undesirable result that wax dissolves in the greasy varnish whereby the varnish picture film is more or less brittle. The brittle picture film can only be drawn off with difiiculty and on fabrics in particular does not adhere with suflicient durability.

In the subject matter of the invention the finished picture which consists of a composition which does not melt under the heat to be used, is detached by dry heat only from the paper backing or foundation and at the same time attached to the article to be ornamented or stamped. The detachment of the pictures is effected therefore in the simplest manner by means of a flat iron or other simple device and so ra idly that the claims of a cheap method 0 working are fully met. In the method the picture is laid on the goods to be stamped in a smooth layer, which particular- -ly if the picture be produced with bronze, has

a high gloss. In thetransfer pictures according tothe lnventlon the picture to be transferred consists of a film which does not melt at the heat usual when ironing off and is printed upon "composed of a composition which does not oring with the solution must be. printed" a paper backing or foundation which by satparts by weight of acetone. Before the uration with or by the application of a coatprinting, two and one half parts by weight of ing of wax, grease, oil or similar substances bronze powder is mixed 'into the solution. repels the picture by dry heat while the pic- 'Since the dissolving medium acetone. evapture on its other side is rendered adhesive crates very quickly, the cellulose solution under the action of dry heat. This rendermust be preserved in an'air-tight container. ing adhesive of. the picture may be achieved Furthermore the cellulose ester paint formed. in two .ways. Either the picture may be bythe mixture of the bronze or a similar col-"' melt at the temperature usual when ironing quickly.

off but becomes adhesive, for which purpose" The adhesive coating, designated by numainly difiicultly fusible resins may be emmeral 4, may be formed by one part of resin ployed, the melting point of which is sufii-j by weight dissolved in two parts of spirits.

ciently remote from the softening, or the pic- This solution must also be preserved in an picture may consist of any filmformin subture may be composed of a composition which air-tight casing and likewise must be applied is unchangeable at the usual heat and be quickly.

provided within its periphery in the well Having now particularly described and asknown way with a coating of a substance certained the nature of my said invention and which becomes adhesive on the application in what manner the same is to be performed, of dry heat e. g. resin. In the latter case the I declare that What I claim is 1. An article for the transfer of a design stance which is durable at the heatemp oyed. comprising a paper backing, a thin layer of Cellulose esters have been found-to be par meltable wax thereupon, a printed design ticularly suitable for this purpose These comprising a" cellulosic base upon said layer substances form a" particularlytough and f Wax, and a layer ofheat responsive "adhedurable picture film, whicli'without requiring sive material'upon said'design. any skill, can be transferredin a satisfactory inanner,and if the picture beproduced wit V. 2., The method of manufacture of transfer bronze, possess'a high gloss. backingwith a thin layer of wax, printing The paint or bronze may either be applied the design upon said layer of wax with a soto the picture layer or be previously mixed lution comprising a cellulosic substance diswith the composition which forms thelayer. solved in a. volatile solvent, and covering said Thmformfation of-the picture film into the; design with an adhesive coating. 7

desired picture is, preferably efihted by Irfte'stimony'wheredf'Ijaffix my signature? 100 printing the picture witha liquid, filmform- ERICH HENTSCHEL ing composition directly upon the prepared backing or foundation. 1 An example of the manner in which the invention may be carried out is as follows:

Paper is coated on one side with a thin coating of wax. On this coating of wax are printed the pictures, in reverse, by means of a collodion solution, which has paint or bronze mixed with it, and-after this print is dry the pictures are printed over with a solution of a readily adhesive resin. Such a constructional example is shown in perspective in Figure 1 of the accompanying drawingand in Figure 2 intransverse section on the line IIII of Figure 1.

I 1 is the paper backing or foundation, Q-the thin coating of wax on the backing 1, 3 the picture composed of a collodion solution containing bronze, and 4 the, coating of readily adhesive resin printed on to the picture 3.

The term picture or picture film does not means that the invention is to be used only for pictorial representations, on the contrary icripts and also any other symbols are meant y it.

The collodion solution containing the coloiing bronze may consist of the following composition. One part by weight of used photographic film which has been cleaned from the gelatine layer is dissolved in ten designs which comprises the covering of a' 1 

